Rowing machine

ABSTRACT

A rowing machine has a base, a seat, a rotating plate, two oar components, a damping mechanism and a transmission mechanism; the base with a rack and a slope rail; the seat cushion slidably coupled to the rail; the rotating plate with a fixing rotating shaft rotatably assembled to the rack through the rotating shaft; two oar components respectively connected to the two ends of the rotating shaft by unilateral bearings in universal joining way to unilaterally drive the rotating plate to rotate when swinging; the rotation damping mechanism is assembled to the rack; the transmission mechanism assembled between the rotating plate and the damping mechanism to drive a damping wheel of the damping mechanism when the rotating plate rotates.

FIELD OF THE INVENTION

The present invention relates to fitness equipment, particularly to arowing machine.

BACKGROUND OF THE INVENTION

Rowing machine is also called boating machine which is a kind of fitnessequipment simulating boating. The traditional rowing machine mainlyadopts with a left and right handles and an oil cylinder mechanism. Theleft and right handles are respectively connected to the oil cylindermechanism, and the damping effect of the left and right handles in theshaking process is realized by using the oil cylinder mechanism. Thiskind of rowing machine with oil cylinder mechanism has disadvantages ofhigh producing cost, easy leakage problem of the oil cylinder andpollution of environment. The rowing machine in current technology (asdisclosed in the Chinese patent database with publishing numberCN203425451U) has the handle connected to a webbing, the webbing isconnected to a pulley, and the pulley drives the damping wheel. When theuser pulls the webbing through the handle, the webbing drives the pulleyto rotate, and also causes the damping wheel to rotate. The dampingwheel produces a damping effect when the user pulls the handle. Duringthe process of pulling and returning, cooperating with the sliding ofthe bottom seat, the user can achieve a simulation of rowing. This kindof rowing machine has disadvantages as follows: 1. the webbing is easilybroken, which results in increasing of use costs. 2. the user can onlypull and return through the handle, but can not achieve a simulation ofrowing with both hands; 3. the handle is connected to the damping wheelby the webbing, so both hands need to work at the same time, one hand ofrowing can not be achieved; 4, The returning is achieved by the actionof elastic element, resulting in unnatural phenomenon of the user'shands when returning.

SUMMARY OF THE INVENTION

The present invention is provided with a new rowing machine to overcomethe disadvantages of the existing known technology, this new structureapplication can not only adjust the damping strength to adapt todifferent intensity of training, but also achieve simulation of singlehand/double hands rowing. No resistance exists during the user returnshand/hands back, making the machine with well simulation effect, simplestructure and low producing cost.

The technical proposal of the present invention is that: a rowingmachine, comprising:

a base with a rack and a slope rail;

a seat cushion slidably coupled to the rail;

a rotating plate with a fixing rotating shaft rotatably assembled to therack through the rotating shaft;

two oar components respectively connected to the two ends of therotating shaft by unilateral bearings in universal joining way tounilaterally drive the rotating plate to rotate when swinging;

a rotation damping mechanism with strength adjustable and assembled tothe rack;

and

an acceleration type transition transmission mechanism assembled betweenthe rotating plate and the damping mechanism to drive a damping wheel ofthe damping mechanism when the rotating plate rotates.

In another preferred embodiment, the acceleration type transitiontransmission mechanism is a belt pulley component, which comprises arotating belt pulley and a belt; the rotating belt pulley comprises alarge and a small belt pulleys coaxially connected, the rotating beltpulley is assembled to the rack, the small belt pulley is linked to therotating plate by a first belt, the large belt pulley is linked to thedamping wheel by a second belt.

In another preferred embodiment, the acceleration type transitiontransmission mechanism further comprises two tensioning pulleysassembled to the rack respectively to couple to the first and the secondbelts.

In another preferred embodiment, the acceleration type transitiontransmission mechanism is a gear component with at least one stage.

In another preferred embodiment, the acceleration type transitiontransmission mechanism is a chain component comprising a rotating chainplate and a chain; the rotating chain plate comprises a large and asmall chain plates coaxially connected, the rotating chain plate isassembled to the rack, the small chain plate is linked to the rotatingplate by a first chain, the large chain plate is linked to the dampingwheel by a second chain.

In another preferred embodiment, the oar component comprises a shaftsleeve, a bearing and an oar; the shaft sleeve is connected to the endportion of the rotating shaft by the bearing, so that the shaft sleeveis rotatable with respect to the rotating shaft, the shaft sleeve isdisposed with two lugs, one end of the oar is inserted between the twolugs and pivoted to the two lugs, so that the oar is capable of axiallyswinging with respect to the shaft sleeve; the oar is universallyjointed to the end portion of the rotating shaft by the shaft sleeve.

In another preferred embodiment, the damping mechanism further comprisesa magnetic board component, the damping wheel is a magnetic controlwheel, the magnetic board component is assembled to the rack and iscoupled to the magnetic control wheel, the magnetic board component isconnected to a spinner or an electronic control component by a pullwire.

In another preferred embodiment, the damping mechanism further comprisesan electromagnetic component, the damping wheel is a magnetic controlwheel, the electromagnetic component is assembled to the rack and iscoupled to the magnetic control wheel, the electromagnetic component isconnected to an electronic control instrument by a wire.

In another preferred embodiment, the damping mechanism is a windagedamping mechanism, the damping wheel is a fan blade.

In another preferred embodiment, the damping mechanism is a waterresistance damping mechanism, the damping wheel is a water wheel.

Compared with the prior art, the invention has the following beneficialeffects:

The present invention adopts the rotating plate, the oar components, theaccelerating transition transmission mechanism and the rotation dampingmechanism to form the main components of the new rowing machine, and therotating plate with a fixing rotating shaft is rotatably assembled tothe rack through the rotating shaft; two oar components are respectivelyconnected to the two ends of the rotating shaft by unilateral bearingsin universal joining way to unilaterally drive the rotating plate torotate when swinging; the rotation damping mechanism assembled to therack; the acceleration type transition transmission mechanism isassembled between the rotating plate and the damping mechanism to drivea damping wheel of the damping mechanism when the rotating platerotates. This kind of new rowing machine of the present invention cannot only adjust the damping strength to adapt to different intensity oftraining, but also achieve simulation of single hand/double handsrowing. the machine has well simulation effect, simple structure and lowproducing cost; it is a rowing machine with new structure.

The oar components of the present invention are linked to the dampingmechanism through the rotating plate and the transmission mechanism; inthis way, there is no drawback that the webbing of the existing knowntechnology is easily broken. The oar components of the present inventionare connected to the rotating shaft through the bearings and unilateralbearings. In this way, when the oar is rotated in one direction (it isactually the equivalent of swinging due to the small angle of rotation),the oar drives the rotating plate to rotate through the bearings andunilateral bearings.

When the oar is rotated in anther direction, the oar rotates by itselfthrough the unilateral bearings, that is to say, the oar rotates blandwith respect to the rotating shaft. In this way, no resistance existswhen the oar returns; the present invention adopt two oar components,which are respectively connected to the unilateral bearing and the endportion of the rotating shaft in universal joining way. In this way, twooar components can be used simultaneously, but also one can be usedonly. The present invention can not only well simulate the rowingaction, but also realize various simulation effects.

A seat back is added at the rear part of the cushion plate, and the seatback is pivoted to the rear end of the cushion plate by a torsionspring, such to provide support to the back of the rowing athlete in theprocess of simulating rowing, greatly improving the effect of simulatingrowing. Further more, the cross bars are sleeved with cylindricalrollers, the cylindrical roller can roll when used, providing massage onthe back of the rowing athlete, and increasing health care of theproduct.

The present invention will be further described with the drawings andthe embodiments; but it should be noted that, the new rowing machine ofthe present invention is not limited to the embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a schematic diagram of a first embodiment of thepresent invention.

FIG. 2 illustrates a schematic diagram of the first embodiment of thepresent invention in another view angle.

FIG. 3 illustrates an exploded and schematic diagram of the firstembodiment of the present invention.

FIG. 4 illustrates a schematic diagram of the rack of the firstembodiment of the present invention.

FIG. 5 illustrates a schematic diagram of the rotating plate, thedamping wheel and the transmission mechanism in coupling way of thefirst embodiment of the present invention.

FIG. 6 illustrates an exploded diagram of the rotating sleeve and therotating plate of the oar component in coupling way of the firstembodiment of the present invention.

FIG. 7 illustrates a sectional diagram of the rotating sleeve and therotating plate of the oar component in coupling way of the firstembodiment of the present invention.

FIG. 8 illustrates a first schematic diagram of the first embodiment ofthe present invention in usage state.

FIG. 9 illustrates a second schematic diagram of the first embodiment ofthe present invention in usage state.

FIG. 10 illustrates a third schematic diagram of the first embodiment ofthe present invention in usage state.

FIG. 11 illustrates a schematic diagram of the rotating plate, thedamping wheel and the transmission mechanism in coupling way of thesecond embodiment of the present invention.

FIG. 12 illustrates a schematic diagram of the rotating plate, thedamping wheel and the transmission mechanism in coupling way of thethird embodiment of the present invention.

FIG. 13 illustrates a schematic diagram of the rotating plate, thedamping wheel and the transmission mechanism in coupling way of thefourth embodiment of the present invention.

FIG. 14 illustrates an exploded diagram of the shaft sleeve and therotating plate of the oar component in coupling way of the fifthembodiment of the present invention.

FIG. 15 illustrates a sectional diagram of the rotating sleeve and therotating plate of the oar component in coupling way of the fifthembodiment of the present invention.

FIG. 16 illustrates a schematic diagram of the seat cushion of the sixthembodiment of the present invention.

FIG. 17 illustrates a schematic diagram of the seat cushion in usagestate of the sixth embodiment of the present invention.

FIG. 18 illustrates a schematic diagram of the sixth embodiment of thepresent invention.

FIG. 19 illustrates a schematic diagram of the sixth embodiment of thepresent invention in another view angle.

FIG. 20 illustrates a schematic diagram of the sixth embodiment of thepresent invention in usage state.

DETAILED DESCRIPTION OF THE EMBODIMENTS First Embodiment

Referring to FIGS. 1-10, a rowing machine of the present inventioncomprises:

a base 1 with a rack 11 and a slope rail 12;

a seat cushion 2 slidably coupled to the rail 12;

a rotating plate 3 with a fixing rotating shaft 31 rotatably assembledto the rack 11 through the rotating shaf 31;

two oar components 4 respectively connected to the two ends of therotating shaft 31 by unilateral bearings 51 in universal joining way tounilaterally drive the rotating plate 3 to rotate when swinging;

a rotation damping mechanism 6 with strength adjustable and assembled tothe rack 11; and

an acceleration type transition transmission mechanism 7 assembledbetween the rotating plate 3 and the damping mechanism 6 to drive adamping wheel 61 of the damping mechanism when the rotating plate 3rotates.

The base 1 further comprises a front base pipe component 13 and a rearbase pipe component 14, the front base pipe component 13 is connected tothe front portion of the rack 11, the rail 12 is connected between therear portion of the rack and the rear base pipe component 14; the rack11 is disposed with a rotating plate assembly portion 15, a transmissionmechanism assembly portion 16 and a damping mechanism assembly portion17.

The acceleration type transition transmission mechanism 7 is a beltpulley component, which comprises a rotating belt pulley 71 and a belt72; the rotating belt pulley 71 comprises a large and a small beltpulleys coaxially connected, the rotating belt pulley 71 is assembled tothe rack 11, the small belt pulley 711 is linked to the rotating plate 3by a first belt 72, the large belt pulley 712 is linked to the dampingwheel 61 by a second belt 72. The rotating plate is a belt pulley aswell, the damping wheel 61 is disposed with a small wheel, a beltconnection portion is disposed at the small wheel.

The acceleration type transition transmission mechanism furthercomprises two tensioning pulleys 73 assembled to the rack 11respectively to couple to the first and the second belts. The effect ofthe tensioning pulleys 73 is to make the belts tension between therotating plate 3 and transition transmission mechanism 7, and betweentransition transmission mechanism 7 and the damping wheel 61.

The transmission mechanism of this embodiment is belt transmission; itcan also be available when it is gear transmission or chaintransmission. When using gear transmission, the acceleration typetransition transmission mechanism is a gear component with at least onestage. When using chain transmission, the acceleration type transitiontransmission mechanism is a chain component comprising a rotating chainplate and a chain; the rotating chain plate comprises a large and asmall chain plates coaxially connected, the rotating chain plate isassembled to the rack, the small chain plate is linked to the rotatingplate by a first chain, the large chain plate is linked to the dampingwheel by a second chain.

The oar component 4 comprises a shaft sleeve 41, a bearing 42 and an oar43; the shaft sleeve 41 is connected to the end portion of the rotatingshaft 31 by the bearing 42, so that the shaft sleeve 41 is rotatablewith respect to the rotating shaft 31, the shaft sleeve 41 is disposedwith two lugs 411, one end of the oar 43 is inserted between the twolugs 411 and is pivoted to the two lugs 411, so that the oar 43 iscapable of axially swinging with respect to the shaft sleeve 41; the oar43 is universally jointed to the end portion of the rotating shaft 31 bythe shaft sleeve 41. In this way, the shaft sleeve 41 is connected tothe rotating shaft 31 by the bearing 42 and the unilateral bearing 51.When the oar 43 drive the shaft sleeve 41 rotated in one direction, therotation of the rotating shaft 31 is caused by the action of theunilateral bearings 51, which is equivalent to drive the rotating plate3 to rotate. When the oar 43 drives the shaft sleeve 41 to rotate inanther direction, as with the universal bearing 51, the shaft sleevedoesn't drive the rotating shaft 31 to rotate blank with respect to therotating shaft 31, therefore, the rotating plate 3 doesn't rotate.

The damping mechanism 6 further comprises a magnetic board component 62,the damping wheel 61 is a magnetic control wheel, the magnetic boardcomponent 62 is assembled to the rack 11 and is coupled to the magneticcontrol wheel, the magnetic board component 62 is connected to a spinner63 by a pull wire.

In this embodiment, the damping mechanism 6 is magnetic control type andmanual operated, the distance of the magnetic board component 62 and themagnetic control wheel is adjustable by the spinner 63, such to adjustthe damping.

In another case, an electronic control method is availbale to adjust thedistance between the magnetic board component 62 and the magneticcontrol wheel by a motor (i.e., an electronic control component).

The oar component of the present invention is linked to the dampingmechanism 6 through the rotating plate 3 and the transmission mechanism7; in this way, there is no drawback that the webbing of the existingknown technology is easy broken. The oar component 4 of the presentinvention is connected to the rotating shaft 31 by the bearing 42 andunilateral bearing 51. In this way, when the oar 43 is rotated in onedirection (it is actually the equivalent to swinging due to the smallangle of rotation), the oar 43 drives the rotating plate 3 to rotatethrough the bearings 42 and unilateral bearings 51. When the oar 43rotates in anther direction, the oar 43 rotates by itself through thebearings 42 and unilateral bearings 51, that is to say, the oar 43rotates blank with respect to the rotating shaft 31. In this way, noresistance exists when the oar 43 returns back, user's hands can returnnaturally; the present invention applies with two oar components 4,which are connected to the end portions of the rotating shaft 31 byunilateral bearings 51 in universal joining way. In this way, two oarcomponents 4 can be used simultaneously, but also one can be used only.It can not only well simulate the rowing action, but also realizevarious simulation effects (such as single hand and double hands rowing,etc.). As can be seen from FIG. 8 to FIG. 10, during the use, the user100 can achieve simulation of single hand/double hands rowing, and havea better exercise on enhancing the muscles of the legs, the waist, theupper limbs, the chest and the back.

Second Embodiment

Referring to FIG. 11, the difference of a rowing machine of thisembodiment from the first embodiment is the damping mechanism. Thedamping mechanism further comprises an electromagnetic component 64, thedamping wheel 61 is a magnetic control wheel, the electromagneticcomponent 64 is assembled to the rack 11 and is coupled to the magneticcontrol wheel, the electromagnetic component 64 is connected to anelectronic control instrument by a wire.

The damping strength of the damping wheel 61 can be adjusted byadjusting the current of the electromagnetic component 64.

Third Embodiment:

Referring to FIG. 12, the difference of a rowing machine of thisembodiment from the first embodiment is the damping mechanism. Thedamping mechanism is a windage damping mechanism; the damping wheel is afan blade 65.

Fourth Embodiment:

Referring to FIG. 13, the difference of a rowing machine of thisembodiment from the first embodiment is the damping mechanism. Thedamping mechanism is a water resistance damping mechanism; the dampingwheel is a water wheel 66.

Fifth Embodiment:

Referring to FIGS. 14-15, the difference of a rowing machine of thisembodiment from the first embodiment is the oar component. The oarcomponent 4 of this embodiment comprises a shaft sleeve 41 and an oar43, without the bearing; the shaft sleeve 41 is connected to the endportion of the rotating shaft 31 by two unilateral bearings 51, so thatthe shaft sleeve 41 is rotatable unilaterally with respect to therotating shaft 31; the shaft sleeve 41 is disposed with two lugs 411,one end of the oar 43 is inserted between the two lugs 411 and ispivoted to the two lugs 411, so that the oar 43 is capable of axiallyswinging with respect to the shaft sleeve 41; the oar 43 is universallyjointed to the end portion of the rotating shaft 31 by the shaft sleeve41.

In this way, the shaft sleeve 41 is connected to the end portion of therotating shaft 31 by two unilateral bearings 51. When the oar 43 drivesthe shaft sleeve 41 rotated in one direction, the rotation of therotating shaft 31 is caused by the action of the unilateral bearings 51,which is equivalent to driving the rotating plate 3 to rotate. When theoar 43 drives the shaft sleeve 41 rotated in anther direction, as withthe unilateral bearing 51, the shaft sleeve 41 doesn't drive therotating shaft 31 to rotate blank with respect to the rotating shaft 31,therefore, the rotating plate 3 doesn't rotate.

Sixth Embodiment:

Referring to FIGS. 16-20, the difference of the rowing machine of thisembodiment from the first embodiment is the seat cushion. The seatcushion 2 of this embodiment comprises a cushion plate 21, a slidinggroove 22 disposed at the bottom portion of the cushion plate and a seatback 23, the seat back 23 is pivoted to the rear end of the cushionplate 21 by a torsion spring. The sliding groove 22 is coupled to therail 12 of the base 1.

A connecting element 24 is disposed between the cushion plate 21 and thesliding groove 22, the seat back 23 is pivoted to the rear end ofconnecting element 24 by a torsion spring. The seat back 23 comprises aseat back bar 231 and a plurality of cross bars 232, the bottom end ofthe seat back bar 231 is pivoted to the rear end of the connectingelement 24 by the torsion spring, the cross bars 232 are respectivelyfixedly connected to the two sides of the seat back bar 231; The numberof the cross bars 232 is even, two cross bars 232 for a groupsymmetrically fixed on both sides of the seat back bar 231. The seatback bar 231 is a rectangular hollow tube, two cross bars 232 for agroup symmetrically fixed on both sides of the rectangular hollow tube.Two cross bars 232 for a group connect into an integrated structure, andpass through the rectangular hollow tube in the transverse direction.That is, two cross bars 232 fixed on both sides of the seat back bar 231is actually one. And each cross bar 232 is sleeved with a cylindricalroller 233.

Referring to FIG. 17, as the seat back 23 is pivoted to the rear end ofthe connecting element 24 by torsion spring, when the rowing simulatorapplies force on the seat back 23, the seat back 23 can overturnbackwardly, theoretically, the seat back 23 can overturn from position Ato position B; when the rowing simulator doesn't apply force on the seatback 23, the seat back 23 is reset under the action of the torsionspring and overturns from position B to position A.

To summarize, the new rowing machine can have a variety of accelerationtype transition transmission mechanism, such as belt transmissionmechanism, gear transmission mechanism, and chain transmissionmechanism. The purpose is to connect the power of the oar component tothe damping mechanism to form a different damping effect. The rotationdamping mechanism can also have many types, such as magnetic control,electromagnet control, windage control and water resistance control.Among them, some rotation damping mechanism can choose manual control,electric control is also available. The seat cushion can be providedwith a seat back or without a seat back.

Although the present invention has been described with reference to thepreferred embodiments thereof for carrying out the patent for invention,it is apparent to those skilled in the art that a variety ofmodifications and changes may be made without departing from the scopeof the patent for invention which is intended to be defined by theappended claims.

INDUSTRIAL APPLICABILITY

The present invention adopts the base, the seat, the rotating plate, theoar components, the rotation damping mechanism and the acceleration typetransition transmission mechanism to constitute a new rowing machine.The base with a rack and a slope rail; the rotating plate with therotating plate and a fixing rotating shaft; the oar component with ashaft sleeve and an oar; the rotation damping mechanism with a magneticboard component and a magnetic control wheel,or an electromagneticcomponent and a magnetic control wheel, or a fan blade, or a waterwheel; the acceleration type transition transmission mechanism with abelt pulley component, or a gear component, or a chain component. Theinvention is easy to realize in industry, and the base, the seat, therotating plate, the oar components, the rotation damping mechanism andthe acceleration type transition transmission mechanism and othercomponents is also easy to process in the industry.

1. A rowing machine, wherein comprising: a base with a rack and a sloperail; a seat cushion slidably coupled to the rail; a rotating plate witha fixing rotating shaft rotatably assembled to the rack through therotating shaft; two oar components respectively connected to the twoends of the rotating shaft by unilateral bearings in universal joiningway to unilaterally drive the rotating plate to rotate when swinging; arotation damping mechanism with strength adjustable and assembled to therack; and an acceleration type transition transmission mechanismassembled between the rotating plate and the damping mechanism to drivea damping wheel of the damping mechanism when the rotating platerotates.
 2. The rowing machine according to claim 1, wherein theacceleration type transition transmission mechanism is a belt pulleycomponent, which comprises a rotating belt pulley and a belt; therotating belt pulley comprises a large and a small belt pulleyscoaxially connected, the rotating belt pulley is assembled to the rack,the small belt pulley is linked to the rotating plate by a first belt,the large belt pulley is linked to the damping wheel by a second belt.3. The rowing machine according to claim 2, wherein the accelerationtype transition transmission mechanism further comprises two tensioningpulleys assembled to the rack respectively to couple to the first andthe second belts.
 4. The rowing machine according to claim 1, whereinthe acceleration type transition transmission mechanism is a gearcomponent with at least one stage.
 5. The rowing machine according toclaim 1, wherein the acceleration type transition transmission mechanismis a chain component comprising a rotating chain plate and a chain; therotating chain plate comprises a large and a small chain platescoaxially connected, the rotating chain plate is assembled to the rack,the small chain plate is linked to the rotating plate by a first chain,the large chain plate is linked to the damping wheel by a second chain.6. The rowing machine according to claim 1, wherein the oar componentcomprises a shaft sleeve, a bearing and an oar; the shaft sleeve isconnected to the end portion of the rotating shaft by the bearing, sothat the shaft sleeve is rotatable with respect to the rotating shaft,the shaft sleeve is disposed with two lugs, one end of the oar isinserted between the two lugs and pivoted to the two lugs, so that theoar is capable of axially swinging with respect to the shaft sleeve; theoar is universally jointed to the end portion of the rotating shaft bythe shaft sleeve.
 7. The rowing machine according to claim 1, whereinthe damping mechanism further comprises a magnetic board component, thedamping wheel is a magnetic control wheel, the magnetic board componentis assembled to the rack and is coupled to the magnetic control wheel,the magnetic board component is connected to a spinner or an electroniccontrol component by a pull wire.
 8. The rowing machine according toclaim 1, wherein the damping mechanism further comprises anelectromagnetic component, the damping wheel is a magnetic controlwheel, the electromagnetic component is assembled to the rack and iscoupled to the magnetic control wheel, the electromagnetic component isconnected to an electronic control instrument by a wire.
 9. The rowingmachine according to claim 1, wherein the damping mechanism is a windagedamping mechanism, the damping wheel is a fan blade.
 10. The rowingmachine according to claim 1, wherein the damping mechanism is a waterresistance damping mechanism, the damping wheel is a water wheel. 11.The rowing machine according to claim 1, wherein the seat cushioncomprises a cushion plate, a sliding groove disposed at the bottomportion of the cushion plate and a seat back, the seat back is pivotedto the rear end of the cushion plate by a torsion spring.
 12. The rowingmachine according to claim 11, wherein a connecting element is disposedbetween the cushion plate and the sliding groove, the seat backcomprises a seat back bar and a plurality of cross bars, the bottom endof the seat back bar is pivoted to the rear end of the connectingelement by the torsion spring, the cross bars are respectively fixedlyconnected to the two sides of the seat back bar; each cross bar issleeved with a cylindrical roller.